Sir Joseph Swan - an early patent model electric light bulb, with socket assembly, circa 1881, with carton,
Lot 73
Sir Joseph Swan - an early patent model electric light bulb, with socket assembly, circa 1881, with carton,
Sold for £1,680 (US$ 2,860) inc. premium
Lot Details
Sir Joseph Swan - an early patent model electric light bulb, with socket assembly,
circa 1881, with carton,
one socket stilt leg stamped with K198 in addition to double stamped Swan's Patent, the lamp with the two conductors having slot cut with tightening collar washer for filament installation, filament (detached) of single-loop wire, within tapering bulbous glass with long evacuation pip-top, various interesting bubbles and other anomolies to glass surface including bubbles with dirt and dust caught inside, inserted into dark blue finished card tube for the stilt leads issuing from the glass T seperator from the base, to opposing connectors chips with the repeating Swan's Patent marks, the socket holder with receiving clips in matching gilt finished metal, polished ring base and gas-light fitting screw thread, connections underside for bulb on twin bare screws bearing cross-head domed screws, the carton of card construction, covered in white paper and the hinge seem (failed) with thin cloth layer, with internal division for the neck of the bulb - 7.1/2in. (19cm) length from pip-top to tube end, glass bulb diameter 2.1/4in. (5.6cm) wide maximum, holder height 3in. (7.6cm), carton 8in. (20.3cm)

Footnotes

  • An accompanying letter addressed from Red Roofs, Burtons Lane, Chalfont St. Giles, Bucks, (tele: Little CHAL 103), dated 3rd December 1934 reads:

    Dear Harry,

    I am leaving for you one of the original Swan carbon filament lamp complete in its original box. This was given to me about 40 years ago and is now quite a respectable antique possibly of some value.
    I want you to have it is case it should get lost and destroyed. I gave one like it to the I.G.E. Museum.
    I hope your paper will go off well, I'm afraid that I can't get to it, and still more afraid that I should not be about to follow it.

    Very best love and good wishes to all, your affe' Uncle,

    Stanley


    The present vendor's late husband enjoyed very much the workings of technical, electrical and scientific items, so this, originally given to the family member, was seen as an important part of the collection.
    Stanley's keen eye certainly led to this splendid bulb being saved from possible destruction, most probably salvaged from a demolition job or building re-wire.
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